/***************************************************************************
 # Copyright (c) 2015-23, NVIDIA CORPORATION. All rights reserved.
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 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions
 # are met:
 #  * Redistributions of source code must retain the above copyright
 #    notice, this list of conditions and the following disclaimer.
 #  * Redistributions in binary form must reproduce the above copyright
 #    notice, this list of conditions and the following disclaimer in the
 #    documentation and/or other materials provided with the distribution.
 #  * Neither the name of NVIDIA CORPORATION nor the names of its
 #    contributors may be used to endorse or promote products derived
 #    from this software without specific prior written permission.
 #
 # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS "AS IS" AND ANY
 # EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 # PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
 # CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 # EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 # PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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 **************************************************************************/
#pragma once
#include "fwd.h"
#include "Core/Macros.h"
#include "Core/Object.h"
#include <slang-gfx.h>

namespace Falcor
{
enum class RtAccelerationStructurePostBuildInfoQueryType
{
    CompactedSize,
    SerializationSize,
    CurrentSize,
};

class FALCOR_API RtAccelerationStructurePostBuildInfoPool : public Object
{
    FALCOR_OBJECT(RtAccelerationStructurePostBuildInfoPool)
public:
    struct Desc
    {
        RtAccelerationStructurePostBuildInfoQueryType queryType;
        uint32_t elementCount;
    };
    static ref<RtAccelerationStructurePostBuildInfoPool> create(Device* pDevice, const Desc& desc);
    ~RtAccelerationStructurePostBuildInfoPool();
    uint64_t getElement(CopyContext* pContext, uint32_t index);
    void reset(CopyContext* pContext);
    gfx::IQueryPool* getGFXQueryPool() const { return mpGFXQueryPool.get(); }

protected:
    RtAccelerationStructurePostBuildInfoPool(Device* pDevice, const Desc& desc);

private:
    Desc mDesc;
    Slang::ComPtr<gfx::IQueryPool> mpGFXQueryPool;
    bool mNeedFlush = true;
};

struct RtAccelerationStructurePostBuildInfoDesc
{
    RtAccelerationStructurePostBuildInfoQueryType type;
    RtAccelerationStructurePostBuildInfoPool* pool;
    uint32_t index;
};

} // namespace Falcor
